|Description:||Under a high magnification of 3375x, this scanning electron micrograph (SEM) revealed some of the morphologic ultrastructure found amongst a collection of pollen granules found within the dehisced, or split open, anther of a yellow "Fireworks" sundrops, Oenothera fruticosa flower. The circular shape of these grains means that they still need to further dry before they are ready to be dispersed. The drying will also change their morphology, whereupon, the grains will become elliptical, or "football"-shaped. These pollen grains were of the "tricolpate" type, which means that the outer surface is traversed from pole to pole, by three symmetrically placed furrows.|
The anther is the organ housed inside a flower that produces pollen through a process known as meiosis, which involves cell division that gives rise to a half compliment of chromosomes, known as haploidy. When a pollen grain representing a male gamete of a plant with its haploid chromosomal contents comes into contact with an ovum, or egg of that specie of plant, which also contains a haploid chromosomal compliment, a zygote is created containing a full compliment of chromosomal DNA.